favicon: The small icon next to a URL address in an Internet browser's address bar.

feeder tray: A component of a printer in which you place paper that you want the printer to take and print on; also called a paper feed.

fiber optic: A technology that sends data as light at high speeds and in large amounts.

file: A binary (not physical) container that holds a chunk of information stored in a computer.

firewall: A computer program that restricts Internet access, primarily to prevent unwanted intrusions into your computer system.

FireWire: Apple’s branded type of computer connection that you can use to attach various devices to your PC; most often used to connection DV camcorders.

flash drive: A keychain-size storage unit that saves files on memory cards; you can plug it into your computer and access it like any other external hard drive.

flash memory: A special type of computer memory that works like both RAM and ROM; information can be written to flash memory, but that information isn’t erased when the power is off.

Flip 3D: When the Aero color scheme is engaged, this tool allows you to visually scroll through all open applications.

force feedback: When a game controller rumbles or provides resistance to your hand that matches the action on-screen.

FSB: Front Side Bus; the primary pathway between a computer’s CPU and memory.